IW 16 and the IWTOAST object

I recently noticed that new component in the IW 16 line IWToast
I am using - testing 16.0.8

I have an iWForm with a Background colour set.
If I drop a IWToast on the iwForm - the background colour becomes WHITE.
64 bit app, or 32 bit app compile

Anybody else notice that?
It's a potential nice addition to ShowMessage or ShowNotification.